Journal-box brass.



G. E. HOYT.

JOURNAL BOX BRASS.

APPLIOATION FILED Arms, 1913.

1,1 30,602. Patented Mar. 2, 1915.

jjg. J.

a ibi/nus HE NORRIS PETERS C0,. PHOTO-LITHO WASHINGTON D. c.

rinrrn sn'rns JOURNAL-BOX BRASS.

Application filed April 8, 1913.

To all whom it may concern a.

Be it known that. I, GEORGE E. Hora, a citizen of the United States,residingrat New Orleans, in the parish of Orleans and State ofLouisiana, have invented new and useful Improvements in JournaLBoxBrasses, of which the following is a specification.

This invention relates generally to an improvement in journal boxes andparticularly to a specific construction of the bearing surface of thebrass therein to minimize friction.

The main object of the present invention is the provision of a brass forthe journal box particularly constructed in the arrange ment of theBabbitt-metal thereon to mate rially reducethe bearing surface and consequently minimize the friction.

The invention in its preferred form of details will be described in thefollowing specification, reference being had to the accompanyingdrawings, in which Figure l is a bottom plan view of the improved brass.view on the line 22 of Fig. l with the axle in place. Fig. 3 is asectional view on the line 3-3 of Fig. 1.

Referring particularly to the accompanying drawings, the brass 1, whichaside from the details hereinafter noted, is of the usual constructionfor cooperation with the ordinary journal box, is materially reduced inwidth at its central point gradually increasing therefrom to the wheelseat end of the brass. On the surface of the brass adjacent the axle 2is arranged the Babbitt bearing, the same being secured to the brass inany desired or preferred manner. This Babbitt bearing will, for the sakeof clearness of description, be stated to include two strips 3 and 4:intersecting at the central point of the brass and disposed at an angleto each other longitudinally of the brass. The bearing or lower surfacesof the bearing strips 3 and 4 are of course curved to conform to thecurvature of the axle, and the adjacent ends of the respective stripsare spaced apart a distance less than the diameter of the axle. By thisarrangement it will be obvious that considering the bearingsurface ofthe axle as circular the Babbitt bearing has its maximum bearingpressure point centrally of the strips from which the bearing extends 1nopposite directions and in effect on spiral lines, as by reason of theangular relation of the strips they extend spirally of the axle.

Specification of Letters Patent.

Fig. 2 is a Vertical sectional.

. Patented Mar. 2, 1915.

Serial No. 759307.

Under these conditions a minimum pressure point in bearing is obtainedat the remote ends of the strips, and the bearing pressure graduallyincreases from such minimum point toward the center or juncture of thestrips where the maximum pressure is had. If desired, the brassintermediate the adacent edges of the strips beyond their meeting pointmay be cut away to reduce the weight, and the ends of the strips at theend of the brass next the flange of the journal box may be connected bya transverse strip 5.

The Babbitt strips 3 and 4: are preferably supplemented by brass strips5 whichare arranged on the sides of the Babbitt strips to support saidBabbitt metal from spreaddisposed at an angle to each otherlongitudinally thereof, and the end strips 5 provide openings 6 whichare arranged medially of the said brass at opposite sides of its center,these openings 6 coincide or register with openings 7 correspondinglyshaped thereto and formed in the crown of the brass so that when thebrass becomes heated from excessive friction the expansion andcontraction resultant will be taken care of due to the openings 6 and 7in both the Babbitt and crown. Thus it will be seen that the brass byreason of its construction with the openings 6 and 7 permits expansionand contraction thereof under all conditions.

What is claimed is 1. The combination with a brass for journal boxes, ofa Babbitt bearing arranged on the journal side of the brass and havingdiagonally arranged bearing strips of uniform width throughout disposedin criss-cross relation longitudinally of the brass to the ends thereofand intersecting each other at the central point of the latter to formspaces therebetween at opposite sides of their point of intersection,the surfaces next to the journal of the bearing strips being curved toconform to the curvature of the said journal, and also the adjacent endsof the respective strips being spaced apart a distance less than thediameter of the journal, and pieces connecting the ends adjacent to eachother of the respective strips, the said brass having its crown providedwith openings correspondingly shaped to and coincident with the spacesformed in the Babbitt bearing V the diagonally arranged strips and endpieces to allow for expansion andjcontra'o tion of the crown andBabbitt, the width at longitudinal stretches of the strip beyond theintersection thereof, the inner'faces of the strips being in contactthroughout their area with the brass; V V

r 2; In a brass for 'journalboxes, a crown piece, and a Babbitt bearingarranged on the Gopi es of this patent maybe obtained iorrfive ceint seach by addressing the "Com mis'sioner of Iatents;

joplrnal side of the crown piece, the said crown piece and Babbittbearing being formed with coincident openings tapering'li in a directiontoward each other and ar-' ranged at opposite sides ofthe medial portionthereof. f

In testimony whereof I aflix my signature in presence of two witnesses."

g 7 GEORGE E; HOYT.

Witnesses: 1 't JOSEPH S. CAREY, i

LoUIs G. EBNOT.

Washingt0n, D. C. p 1

